Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Chemical bond wikipedia , lookup
Bremsstrahlung wikipedia , lookup
Quantum electrodynamics wikipedia , lookup
Electron scattering wikipedia , lookup
X-ray photoelectron spectroscopy wikipedia , lookup
Auger electron spectroscopy wikipedia , lookup
Tight binding wikipedia , lookup
Atomic orbital wikipedia , lookup
X-ray fluorescence wikipedia , lookup
Hydrogen atom wikipedia , lookup
Name ____________________ AP Chemistry Worksheet 1-2 1. 1980 D (a) Write the ground state electron configuration for an arsenic atom, showing the number of electrons in each subshell (b) Give one permissible set of four quantum numbers for each of the outermost electrons in a single As atom when it is in its ground state. (c) Is an isolated arsenic atom in the ground state paramagnetic or diamagnetic? Explain briefly. (d) Explain how the electron configuration of the arsenic atom in the ground state is consistent with the existence of the following known compounds: Na3As, AsCl3, and AsF5. 2. 1981 D The emission spectrum of hydrogen consists of several series of sharp emission lines in the ultraviolet (Lyman series) in the visible (Balmer series) and in the infrared (Paschen series, Brackett series, etc.) regions of the spectrum. (a) What feature of the electronic energies of the hydrogen atom explains why the emission spectrum consists of discrete wavelength rather than a continuum wavelength? (b) Account for the existence of several series of lines in the spectrum. What quantity distinguishes one series of lines from another? (c) Draw an electronic energy level diagram for the hydrogen atom and indicate on it the transition corresponding to the line of lowest frequency in the Balmer series. (d) What is the difference between an emission spectrum and an absorption spectrum? Explain why the absorption spectrum of atomic hydrogen at room temperature has only the lines of the Lyman series. 3. 2006 D Suppose that a stable element with atomic number 119, symbol Q, has been discovered. (a) Write the ground-state electron configuration for Q, showing only the valence-shell electrons. (b) Would Q be a metal or a nonmetal? Explain in terms of electron configuration. (c) On the basis of periodic trends, would Q have the largest atomic radius in its group or would it have the smallest? Explain in terms of electronic structure. (d) What would be the most likely charge of the Q ion in stable ionic compounds? *(e) Write a balanced equation that would represent the reaction of Q with water. *(f) Assume that Q reacts to form a carbonate compound. (i) Write the formula for the compound formed between Q and the carbonate ion, CO32–. (ii) Predict whether or not the compound would be soluble in water. Explain your reasoning.